In the spring 2020 EU Watch List, Crisis Group warned that the military, political and humanitarian situation in Yemen could go “from bad to worse”. That has happened: Yemen is in freefall. UN-led, U.S.-supported efforts to reach a nationwide ceasefire have borne no fruit. Nor have attempts to prevent a battle for Marib, the internationally recognised government’s last bastion in the north. Huthi rebels appear poised to launch another offensive on the city in the coming weeks and months. If Marib falls, and even if it does not, fighting is also likely to intensify on other fronts. A Saudi-brokered deal between the government and southern secessionists hangs by a thread, even after the sides formed a power-sharing government in December 2020. A Huthi takeover of Marib would also likely precipitate a fresh wave of conflict in Yemen’s south and west.